fork syscall assembly demo

The-Alchemist-Co · Jul 12, 2020 · 311a855 · 311a855
commit 311a855
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diff --git a/.sys_fork.s.swp b/.sys_fork.s.swp
diff --git a/sys_fork b/sys_fork
diff --git a/sys_fork.o b/sys_fork.o
diff --git a/sys_fork.s b/sys_fork.s
@@ -0,0 +1,30 @@
+BITS 64
+
+extern printf
+
+global _main
+
+section .rodata
+	print_result db 'pid => %d', 10, 0
+section .text
+
+_main:
+	jmp _print_pid
+
+
+_print_pid:
+	mov rax, 57
+	syscall
+	mov rdi, print_result
+	mov rsi, rax
+	xor rax, rax
+	call printf
+	syscall
+	jmp _exit
+
+
+_exit:
+	mov rax, 0x3C
+	mov rdi, 0
+	syscall
+